The boot priority settings are often found under the Boot tab of the computer's BIOS/UEFI utility. The BIOS/UEFI utility can be accessed by pressing the key which is shown on the manufacturer's splash screen when booting. This is the F12 key on many computers. The keys to press, such as F12, F2, Del or Esc, differ on computers from different manufacturers. When grub bootloader is installed it does not change the key which is used to access the BIOS/UEFI utility.
When the power button is pressed to start the computer, it will try to boot first from whatever option is listed first in the boot priority section of the computer's BIOS/UEFI utility. If a USB flash drive is listed first in the boot priority list, it will try to boot from the USB flash drive first. If the internal hard drive where Ubuntu is installed is listed first in the boot priority list, the computer will boot to Ubuntu.
Boot menu and BIOS access keyssource
Manufacturer Models Boot Menu Key BIOS Key
Acer Aspire One zg5, zg8, Aspire Timeline F12 F2
Acer Aspire v3, v5, v7 F12* F2
Acer Esc, F2, F12 Del, F2
Manufacturer Models Boot Menu Key BIOS Key
Apple Post-2006 models Option
Manufacturer Models Boot Menu Key BIOS Key
Asus Desktops F8 F9
Asus VivoBook f200ca, f202e, q200e, s200e, s400ca, s500ca, u38n, v500ca, v550ca, v551, x200ca, x202e, x550ca, z202e Esc Delete
Asus N550JV, N750JV, N550LF, Rog g750jh, Rog g750jw, Rog g750jx Zenbook Infinity ux301, Infinity ux301la, Prime ux31a, Prime ux32vd, R509C, Taichi 21, Touch u500vz, Transformer Book TX300 Esc (Disable "Fast Boot" and "Secure Boot Control") F2
Asus k25f, k35e, k34u, k35u, k43u, k46cb, k52f, k53e, k55a, k60ij, k70ab, k72f, k73e, k73s, k84l, k93sm, k93sv, k95vb, k501, k601, R503C, x32a, x35u, x54c, x61g, x64c, x64v, x75a, x83v, x83vb, x90, x93sv, x95gl, x101ch, x102ba, x200ca, x202e, x301a, x401a, x401u, x501a, x502c, x750ja F8 Delete
Asus Eee PC 1015, 1025c Esc F2
Manufacturer Models Boot Menu Key BIOS Key
Compaq Presario Esc, F9 F10
Manufacturer Models Boot Menu Key BIOS Key
Dell F12** F2
Manufacturer Models Boot Menu Key BIOS Key
eMachines F12 Tab, Delete
Gateway
Manufacturer Models Boot Menu Key BIOS Key
Fujitsu F12 F2
Manufacturer Models Boot Menu Key BIOS Key
Gigabyte F12 Del
Manufacturer Models Boot Menu Key BIOS Key
HP Esc, F9 Esc, F10, F1
HP Pavilion Media Center a1477c Esc F10
HP Pavilion 23 All In One Esc (Select boot media from the menu) F10
HP Pavilion Elite e9000, e9120y, e9150t, e9220y, e9280t Esc, F9 F10
HP Pavilion g4, g6 and g7, Probook 4520s, 4525s, 4540s, 4545s, 5220m, 5310m, 5330m, 5660b, 5670b Esc F10
HP Pavilion HPE PC, h8-1287c, Pavilion PC, p6 2317c, Pavilion PC, p7 1297cb, TouchSmart 520 PC, ENVY x2, m4, m4-1015dx, m4-1115dx, sleekbook m6, m6-1105dx, m6-1205dx, m6-k015dx, m6-k025dx, touchsmart m7, Envy, dv6 and dv7 PC, dv9700, Spectre 14, Spectre 13, 2000 - 2a20nr, 2a53ca, 2b16nr, 2b89wm, 2c29wm, 2d29wm Esc (Then F9 for "Boot Menu") Esc
HP 2000 Esc (Then F9 for "Boot Menu". Select "Patriot Memory" on the Boot Option Menu) Esc
HP Pavilion a410n Esc F1
Manufacturer Models Boot Menu Key BIOS Key
Intel F10
Manufacturer Models Boot Menu Key BIOS Key
Lenovo IdeaPad s300, u110, u310 Touch, u410, u510, y500, y510, yoga 11, yoga 13, z500 Novo Button (in the left corner of the laptop), F12 Novo Button
Lenovo IdeaPad P500 F12 or Fn + F11 F2
Lenovo IdeaPad S10-3, g460, g470, g475, g480, g485 F12 F2
Manufacturer Models Boot Menu Key BIOS Key
Microsoft Surface Pro 1-3 Volume-Down Button
Microsoft Surface Pro 4 & Book Volume-Up Button
Manufacturer Models Boot Menu Key BIOS Key
NEC F5 F2
Manufacturer Models Boot Menu Key BIOS Key
Packard Bell F8 F1, Delete
Manufacturer Models Boot Menu Key BIOS Key
Samsung F12, Esc F2, F10
Samsung NC10, np300e5c, np300e5e, np350v5c, np355v5c, np365e5c, np550p5c Esc F2
Samsung Series 5 Ultra, Series 7 Chronos, Series 9 Ultrabook Esc (Must disable "Fast Boot" in BIOS) F2
Samsung Ativ Book 2, 8, 9 F2 (Must disable "Fast Boot" in BIOS) F10
Manufacturer Models Boot Menu Key BIOS Key
Sharp F2
Manufacturer Models Boot Menu Key BIOS Key
Sony VAIO Duo, Pro, Flip, Tap, Fit Assist Button (Use the Assist Button when the computer is off, not when it is booting) Assist Button (Use the Assist Button when the computer is off, not when it is booting)
Sony VAIO, PCG, VGN F11 F1, F2, F3
Sony VGN Esc, F10 F2
Manufacturer Models Boot Menu Key BIOS Key
Toshiba Kira, Kirabook 13, Ultrabook, Qosmio g30, g35, g40, g50, Qosmio x70, x75, x500, x505, x870, x875, x880 F12 F2
Toshiba Protege, Satellite, Tecra F12 F1, Esc
Toshiba Equium F12 F12
Manufacturer Models Boot Menu Key BIOS Key
ASUS F8 DEL
Gigabyte F12 DEL
MSI F11 DEL
Intel F10 F2
Asrock F11 F2, DEL
EVGA F7 DEL
*F12 Boot Menu
must be enabled in BIOS.
**Select USB Flash Drive
.
If you can't get into the BIOS setup utility at all because it's password protected and you forgot the password you can remove the BIOS password by removing the CMOS battery for 5 minutes and then putting it back in. This will also reset all BIOS/UEFI settings back to their defaults.
F2
orEsc
to access Bios settings. On others it isCTRL + Alt + ESC
.